Methods of processing waste activated sludge

A technology for activating sludge and waste, applied in chemical instruments and methods, protein components of waste, sludge treatment, etc., can solve problems such as high cost

Inactive Publication Date: 2015-09-30
โปรเซลล์ อินเวสท์เม้นท์ส ลิมิเต็ด
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the equipment required to dry large volumes of waste activated sludge at about 55°C can be very large and / or prohibitively costly

Method used

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  • Methods of processing waste activated sludge
  • Methods of processing waste activated sludge
  • Methods of processing waste activated sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] Example 1. Thermal Treatment of Waste Activated Sludge

[0136] A wastewater stream containing BOD, nutrients and dissolved oxygen is aerated in tanks or ponds to produce cellular biomass. This biomass is then separated from the bulk water in a clarifier, dissolved air flotation system, membrane filter, or other device, part of it is returned to the aerobic pond, and part of it is removed from the system as waste activated sludge. The waste activated sludge is then heated in a closed pressure vessel to a temperature of from about 121°C to about 155°C to produce commercially sterile waste activated sludge.

Embodiment 2

[0137] Example 2. Thermal Treatment of Waste Activated Sludge

[0138] Wastewater streams from beverage production plants, potato processing plants, corn processing plants, sugar processing plants, citrate production plants, yeast manufacturing plants, meat rendering plants or milk processing plants were treated as described in Example 1.

Embodiment 3

[0139] Example 3. Thermal Treatment of Waste Activated Sludge

[0140] Wastewater streams from beverage processing plants (such as beer breweries, wineries, palm oil mills or fruit juice factories) were treated as described in Example 1.

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Abstract

Methods for processing waste activated sludge obtainable from wastewater plants. The methods herein are useful in that they provide novel waste activated sludge preparations that are substantially free of live microbial organisms and contain a high content of digestible protein.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application No. 61 / 916,365, filed December 16, 2013, entitled "METHODS OF PROCESSING WASTE ACTIVATED SLUDGE," the disclosure of which is incorporated by reference in its entirety This application is used for all purposes. technical field [0003] In various embodiments, the present application provides, inter alia, novel methods for treating waste activated sludge obtainable or derived from wastewater streams, products produced by such methods (e.g., solid protein feed products), and The method of preparation of the product. These methods are useful because they enhance water remediation and provide raw materials that can be used to make a variety of products including, for example, animal feed, human food, and / or fertilizers. Background technique [0004] Manufacturers of many industrial products involve the use of water, resulting in the generation of waste water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/00
CPCC02F11/02A23K1/188A23J1/001A23K1/007C02F2203/00A23K10/12A23K50/80C02F1/30C02F1/302C02F1/305C02F1/307C02F1/34C02F1/36C02F11/185C02F11/13
Inventor A.洛根L.金格拉斯S.特里
Owner โปรเซลล์ อินเวสท์เม้นท์ส ลิมิเต็ด
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